Morphology of earthworm and frog has always been controversial because of its unexpected questions in the NEET exam. Though these are not mentioned in the NEET Biology even then, questions were asked regarding this topic if you look at the previous yearís papers.
I will recommend you to cover these topics also for being at a safer side. Solve all the previous yearís papers and it will help you in understanding about the type of questions asked in the NEET exam.
Hope this will help..!!
Best of luck..!!